Here is an interesting article on an experiment in ADX that went slightly wrong: https://www.westword.com/news/a-broken-code-5063819

Here are some articles by Erin Rosa on various aspects of life in ADX: https://www.coloradoindependent.com/2007/09/24/inside-florence-supermax-locked-doors-locked-mouths/

https://www.coloradoindependent.com/tag/inside-supermax/

https://www.prisonlegalnews.org/news/2004/nov/15/cowboy-justice-bop-guards-convicted/

https://www.researchgate.net/publication/247745190_A_Culture_of_Harm

https://openscholarship.wustl.edu/law_journal_law_policy/vol22/iss1/23/

https://brooklynworks.brooklaw.edu/jlp/vol17/iss1/5/

Here is an article from 1992 on Control Unit Prisons in the United States. It is still relevant to Tom’s situation today, decades later:

http://people.umass.edu/~kastor/ceml_articles/cu_in_us.html